screw driver bit Head types:PH, PZ, slot, Torx, square, hex, Torx hollow, Torx plus, tri-wing, etc.. Special heat ... -treated Product Name screw driver bitsBrand Namesun-alpsLength25-300MMSurface treatmentsandblasted ... , slot, Torx, square, hex, hex-plus, Z-spanner, Torx hollow, Torx plus, tri-wingpacking listIN carton with palletsDelivery Lead ...